RN-174P-I/RM

RN -17 4-DS   RN-174 WiFly Super Module Features • Evaluation board for the RN-171 module • Supports chip antenna (RN-174-C), PCB trace antenna (RN-174-P), wire antenna (RN-174-W), and U.FL connector for an external antenna (RN-174-U) • Ultra-low power: 4-uA sleep, 30-mA Rx, 180-mA Tx at 10 dBm • Configurable transmit power: 0 to +12 dBm • RS-232 and TTL UART hardware interfaces • Up to 1 Mbps data rate over UART • Through-hole board simplifies system integration • Powered by 3.3 to 16-V DC (input voltage can go down to 2 V DC when using boost regulator) • Jumpers for setting ad hoc mode and enabling the battery boost circuit • 10 general-purpose digital I/O pins • 8 analog sensor interfaces; configurable sensor power outputs 0 to 3.3-V DC • Real-time clock for wakeup and time stamping • Complete TCP/IP networking stack • Wi-Fi Alliance certified for WPA2-PSK • FCC / CE/ ICS certified and RoHS compliant Applications • Wireless serial connections • Remote sensors • Telemetry • Security • Industrial sensors and controls • Home automation www.rovingnetworks.com   Description The RN-174 evaluation board is a field-ready, Wi-Fi Alliance certified, 802.11 b/g prototyping platform for the RN-171 module. The board has the flexibility to connect directly to embedded processors via a standard RS-232 interface or through the TTL UART interface. The RN-174 contains a battery boost circuit, which makes it possible to power the board using two AA batteries (the input voltage can go down to down to 2.0 V DC when using the battery boost circuit). The battery boost circuit makes the RN-174 perfect for batterypowered applications such as sensors, data acquisition systems, controllers, etc. The status LEDs and jumpers enable rapid prototyping and integration into existing systems. The RN-174 is based on the Roving Networks RN-171 module. The RN-171 module incorporates a 2.4-GHz radio, processor, full TCP/IP stack, real-time clock, and supports the FTP, DHCP, DNS, and HTML client protocols. The RN-171 is the smallest, lowest power 802.11 b/g module available. The module supports ad hoc and infrastructure networking modes. The analog sensor interface provides direct connections to send temperature, acceleration, and other analog data without requiring an external microprocessor. The RN-171 module is programmed and controlled with a simple ASCII command language. Once the configuration is set up, the module can automatically scan to find an access point, associate, authenticate, and connect over any Wi-Fi network. Additionally, the module can automatically send data to a remote host and go back to a low-power sleep state once the data transmission completes. Version 1.3r 4/9/2012 1 RN -17 4-DS   OVERVIEW • Host data rates up to 921 Kbps TX, 500 Kbps RX for UART • Intelligent, built-in power management with programmable wake-up events (timers and I/O) • Real-time clock for time stamping, auto-sleep, and auto-wakeup modes • Configuration over Wi-Fi or UART using simple ASCII commands • Over the air firmware upgrade via FTP • Secure Wi-Fi authentication: WEP-128, WPA-PSK (TKIP), and WPA2-PSK (AES) • Built-in networking applications: DHCP, DNS, ARP, ICMP UDP, Telnet, FTP, and HTML client • 802.11 b/g power save and roaming functions • Supports WPS push-button mode for easy network configuration The evaluation board’s size and weight are: • Size—2” x 1.1” x 0.45” • Weight—0.35 oz Tables 1 through 5 provide detailed specifications for the evaluation board. Table 1. Environmental Conditions Parameter Value Temperature range (operating) o o o o -45 C ~ 85 C Temperature range (storage) -45 C ~ 85 C Relative humidity (operating) ≤90% Relative humidity (storage) ≤90% Table 2. Electrical Characteristics Supply Voltage, Note (1) Min Typ. Max. Unit 2.0 (1) 3.3 16 (1) V UART interface (J8) 3.0 3.3 3.6 V RS-232 interface (J3) 5.0 16 V - mA Power connector (J7) Power consumption Sleep Standby (doze) 4 - 15 Connected (idle, RX) Connected (TX) uA 40 mA 180 at 10 dBm mA Notes: 1. Supply voltage range varies depending upon the header used. See “Design Concerns” on page 6 for more details. www.rovingnetworks.com Version 1.3r 4/9/2012 2 RN -17 4-DS   Table 3. Analog Sensor Inputs Parameter Value Sensor 0, 1, 2, and 3 wake-up detection threshold 500 mV AD sensor 0 - 7 measurement range 0 - 400 mV Precision 14 bits = 12 uV Accuracy 5% uncalibrated, .01% calibrated Minimum conversion time 35 uS (5 kHz over Wi-Fi ) Sensor power (pin 33) output resistance 3.3 V 10 ohms, maximim current = 50 mA Table 4. Radio Characteristics Parameter Specifications Frequency 2,402 ~ 2,480 MHz Modulation 802.11b compatibility: DSSS (CCK-11, CCK-5.5, DQPSK-2, and DBPSK-1) 802.11g: OFDM (default) Channel intervals 5 MHz Channels 1 - 14 Transmission rate (over the air) 1 – 11 Mbps for 802.11b / 6 – 54 Mbps for 802.11g Receive sensitivity -83 dBm typical Output level (Class1) 0 to +12 dBm (software configurable) Table 5. Transmit Power Output Power 802.11 b (2 Mbps) Current in mA Note (1) 802.11 g (24 Mbps) Current in mA Note (1) 0 120 135 2 130 150 4 170 190 6 175 200 8 180 210 10 185 225 12 190 240 Notes: 1. Measured at 3.3-V DC input. The power consumption is the average power, active during actual power consumption. BOARD DESCRIPTION Figure 1 describes the evaluation board’s connectors and interfaces. Table 6 describes the LED indicators. www.rovingnetworks.com Version 1.3r 4/9/2012 3 RN -17 4-DS   Figure 1. RN-174 Evaluation Board (Part 1 of 2) Power Select Jumper (J4) LED Indicators Power (J7) Pull Up/ Down (J2) Factory Reset/ Ad Hoc Mode (J6) PCB Trace Antenna ISP Connector (J5) GPIO Interface TTL Signals (J8) Sensor Interface (J1) RS-232 Interface (J3)   GPIO Interface TTL Signals (J8) 5 4 3 2 1 10 9 8 7 6 RS-232 Interface (J3) 1 2 3 4 5 6 7 8 9 10 11 12 13   RX - input to evaluation board TX - output from evaluation board Sensors (J1) 9 8 7 6 5 4 3 2 1 Pin   Description 1 Sensor PWR 2 Sensor 4 (3.3-V tolerant) 3 Sensor 5 (3.3-V tolerant) 4 Sensor 7 (1.2 V only) 5 Sensor 5 (1.2 V only) 6 Sensor 4 (1.2 V only) 7 Sensor 6 (1.2 V only) 8 Sensor 3 (1.2 V only) 9 GND Pin Description 1 No connect 2 RS-232 TX 3 RS-232 RX 4 No connect 5 GND   6 No connect 7 RS-232 RTS Pin Description 8 RS-232 CTS 1 3.3 VDD 9 4 to 16 VDC input 2 GND 10 No connect 3 UART RX 4 UART TX 5 GPIO4 6 GPIO5 7 GPIO6 Pin Description 8 GPIO7 1 5 to 12 VDC 9 GPIO8 2 GND 10 GPIO9 11 UART CTS Pull Up/Down (J2) 12 UART RTS 3 2 1 13 RESET Power Select Jumper (J4) High-Voltage Mode (Default). The board is powered by a source up to 16 V DC.   Low-Voltage Mode. The board is powered by 2.0- to 3.3-V DC only.   External Power Mode. Used when powering the board with regulated 3.3-V DC power.   RX - input to evaluation board TX - output from evaluation board Power (J7) 2 1     Ad Hoc Mode/Factory Reset (J6)   www.rovingnetworks.com WARNING: Voltage on pins marked 1.2 V Only should not exceed 1.2 V or permanent damage will occur.   Version 1.3r 4/9/2012 4 RN -17 4-DS   Figure 2. RN-174 Evaluation Board (Part 2 of 2)   ISP Connector (J5) 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16     Pin Description 1 GND 2 3.3 VDD 3 DMA UART TX 4 UART RX 5 FORCE AWAKE   6 RESET 7 DMA UART RX 8 UART TX 9 3.3 VDD 10 GND 11 GPIO9 12 GPIO4 13 GPIO5 14 GPIO6 15 GPIO8 16 Not Used   Table 6. RN-174 Evaluation Board LED Indicators Condition Blue LED Red LED Yellow LED Green LED On solid   Not used   -­‐   -­‐   Connected over TCP Fast blink   Not used   Not associated   Rx/Tx data transfer   No IP address Slow blink   Not used   Associated, no Internet   -­‐   IP address OK Off   Not used   Associated, Internet OK   -­‐   - www.rovingnetworks.com Version 1.3r 4/9/2012 5 RN -17 4-DS   PHYSICAL DIMENSIONS Figure 2 shows the evaluation board’s physical dimensions. Figure 2. RN-174 Physical Dimensions 1,105 1,000 270 2 mm 2,000 1,660 60 2 mm 1,105 All Dimensions Are in Mils, Unless Otherwise Specified   DESIGN CONCERNS   This section provides design information, such as powering the evaluation board, sensor interface settings, ad hoc mode, and restoring factory settings. Powering the Module You can power the RN-174 evaluation board from the RS-232 header, the UART interface, or the power connector. You should only provide power on one of the three power connectors. Figure 3 shows the jumper settings for the different power modes. • If powered from the RS-232 header (J3), apply 5 to 16 V DC power on pin 9 and ground to pin 5 of the RS-232 header. • If powered from the UART header (J8), apply 3.3 V DC power on pin 1 and ground on pin 2 of the UART interface. • If powered from the power connector (J7), apply 4 to 16 V DC power, depending upon the jumper configuration of the power select jumpers (J4). www.rovingnetworks.com Version 1.3r 4/9/2012 6 RN -17 4-DS   Figure 3. Jumper Settings for Powering the Evaluation Board Low-Voltage Mode   • High-Voltage Mode (Default) External Power Mode     Low-Voltage Mode (Battery Boost Enabled)—When the board is configured in low-voltage mode, it MUST be powered by 2.0 - 3.3 V DC power ONLY on the power connector (J7) or on the RS-232 header (J3). In low-power mode, the battery boost circuit is enabled, which allows the input voltage to drop down to 2.0 V DC. NOTE: Applying a voltage greater than 3.7 V DC when the board is configured in low-voltage mode will permanently damage the RN-171 module on the board, causing it to malfunction. • High-Voltage Mode (Battery Boost Disabled)—Default. When shipped, the board is set up to use this mode. When configured in high-voltage mode (4-16V DC), you must apply power on the power connector (J7) or on the RS-232 header (J3). The battery boost circuit is disabled in this mode. • External Power Mode—This mode is used when powering the module from a regulated 3.3-V power supply to the UART header (J8) or if you are using the RN-G2ISP to power the module. In this mode, the module cannot be powered from the RS-232 header (J8) or the power connector (J7). Configuring the Module for Low-Current Consumption The RN-171 module draws only 4 uA when it is in a sleep state. To achieve this low current consumption: • GPIO pins 4, 5, 6, 7, and 8 must be pulled to ground using the pull up/down jumper (J2). • You should remove the RS-232 chip from the board or pull RTS and CTS to GND on the UART header (J8) (optional). NOTE: If the RS-232 chip is installed, the current consumption will be around 88 uA when the 10-pin serial cable is disconnected and 160 uA when the cable is connected to the RS-232 device. Sensor Interfaces The sensor inputs must not exceed 1.2 V. The ADC saturates at 400 mV. Roving Networks recommends that you use the sensor power output to drive any analog devices that are attached to the sensor pins. NOTE: Sensor pins 2 and 3 have a resistor network in front of sensors 4 and 5, respectively, so these pins can be driven with up to 5 V DC. Ad Hoc & Restoring Factory Settings Jumper J6 on the jumper header is connected to GPIO9. When this jumper is in place, the module powers up in ad hoc mode. If the jumper is then toggled 5 times, the module is restored to the initial factory default configuration. This setting is useful for cases in which the module is misconfigured and is no longer responding. www.rovingnetworks.com Version 1.3r 4/9/2012 7 RN -17 4-DS   ORDERING INFORMATION Table 7 provides ordering information for the RN-174 evaluation board. Table 7. Ordering Information Part Number Description RN-174-P RN-174 board with PCB trace antenna, standard firmware RN-174-W RN-174 board with wire antenna, standard firmware, Note (1) RN-174-U RN-174 board with U.FL. connector, standard firmware, Note (1) RN-174-C RN-174 board with chip antenna, standard firmware, Note (1) RN-174-K Development Kit (Includes the RN-174 board and accessory cables) RN-UFL-SMA6 6 inch cable with U.FL connector on one end and SMA on the other RN-SMA4-RP 4” external antenna with reverse polarity SMA connector. Used with RN-UFL-SMA6 For other configurations, contact Roving Networks directly. Notes: 1. For these non-standard configurations, please contact Roving Networks directly at info@rovingnetworks.com. Visit http://www.rovingnetworks.com for current pricing and a list of distributors carrying our products. Copyright © 2012 Roving Networks. All rights reserved. Roving Networks is a registered trademark of Roving Networks. Apple Inc., iPhone, iPad, iTunes, Made for iPhone are registered trademarks of Apple Computer. Roving Networks reserves the right to make corrections, modifications, and other changes to its products, documentation and services at any time. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. Roving Networks, Inc. 102 Cooper Court Los Gatos, CA 95032 +1 (408) 395-5300 www.rovingnetworks.com www.rovingnetworks.com Roving Networks assumes no liability for applications assistance or customer’s product design. Customers are responsible for their products and applications which use Roving Networks components. To minimize customer product risks, customers should provide adequate design and operating safeguards. Roving Networks products are not authorized for use in safety-critical applications (such as life support) where a failure of the Roving Networks product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Version 1.3r 4/9/2012 8